This thread is regarding contraband specifically.5 contraband can be turned in at the Starbase 39 security officer for 2,000 dilithium. The mission takes 4 hours. It can be sold on the Exchange for 40k+ EC.

Here are the Doff Assignments I know of so far and how many contraband they give on normal/critical success. If you have more information (especially Fed side) please post here.